Carbureter.



A. THOMPSON.

CARBURETER. i APPLICATION fluo MAY 11. 1916.

l Patented Oct. 23,1917.

`II'U'.hl'lHlEI).lI-IS TO LORA E. BEAMAN, OF PROV'IIENCE, RHODE ISLAND.

CARBUBETER.

Specification of Letters Patent.

Patented oct. 23, 191e. ff

Application filed May 11, 1916. Serial No. 96,785.

To all whom it may rancore:

Be it known that l. Alanna Tuoiarsoa, a citizen ol the United States of Amerie-a, residing at Detroit, in the bounty oli llayne and State of llliehigan, halve inrented ce1 tain new and useful .linprorcinents in Car-- hurelers, of which the following;h is a speeilin cation, reference. beine had therein to the accompanying drawings.

lt is the object of the invention to obtain a construction of carburetor whiuh will op erate equally Well with liquid fuels ol1 different specific gravity, as 'for instance gasoleue or kerosene. To this end the invention coinprises the novel Construction of' positively., mechanically operated sprayer and its arrangement and (airiiihination with other eooperating parts, as hereinafter set forth.

In the drawings:

Figure l is a sectional elevation of the carbureter Fig. 2 is a frag'n'ientary sectional plan View thereof.

A is the earhureter easing; in the upper portion of which is arranged the throttle Valve B and beneath this ralre an enlargiiid chamber C connected with an air inlet con `duit l). Centrally within the eliainher l" is a hearing memher lll., within which jenn nailed a rotary shaft F having mounted on its uiiper end a hollow dislvehaped :inelnher G. This member (i is arranged in close proximity to a parallel partition extend lng across the chamber C, and haring at its periphery a' series ot' comparatively narrow segmental apertures .l forming the air cernmunieatingr passages between the lower and upper parts of the easing. l is a iloat ehamn her for maintaining a level of liquid iuel slightly aho're the rotary dish (il and dia pl'iragm LH. and this loal' chamber is eo'nneeted br a passage l( exi-.ending through the partition H to a discharge' apertu"ev li centralljl7 above4 the hollow dish (l. '.lherc is also preferably arrangedV a valve M for r'estricting la. passage lx'. at one point and i regulating the flow of liquid theretlnough,

Said valve haringr a. handle N. Near the discharge port li the passage l( has an up* wardly-deflected portion K', exteni'ling.r to a point slieflitl)7 above the level of the liquid in the {loat chamber J.y which forms a trap and prevents the* How of Vthe liquid fuel by gravity through the port L.

The hollow 'disk member Gr is preferably formed with an annular chamber O in its .1x peripheral portion, provided with a. seriesA g.. of discharge jet apertures P which aredireeted into the space between the periphery of' the disk and the wall oit thel casing. A'. @Qi A fine mesh screen (.1 is pre'ferabl)7 arranged' at the inner edge of the annular chamber 0,? e? so as to exclude the entrance, of any foreign. materia] inthe liquid `fuel which might clogV v the jet apertures. lu operation. the rotary G54 shalt F is connected with a driver 'for inipartira;l rota rl' nim'enlent thereto, preferably Y i connected to the engine, so that the speed oi.E rotation oll ilux shaft will he proportional to the engine speed. Thus, when the engine Tui is started the. initial cranking; will cause rotation olt the shalt ll" and dish member G.' which will eentrir'up'ally force au)-Y liquiil i fuel :in the hollow dish outward and through, the jet apertures l. At the Same time the suetion from the engine cylinder will cause an annular envelop oli air to pass by the periphery ol' the hollow dish member and through the segmental apertures l in the-J1 Y. partition nien'lher ll. thereby picking uplhe discharged liquid in the forni oi a linelrdivided spray. The passano ol. the envelop l of air lrv lhe lileriplieijr nl" the hollow elisir4 also'prrirhues a suf-tion or parlial vacuum within the hollow dish. which f'auses the discharge ol the liquid fuel through the port L. lherelijy maintaining a constant discharge` of the liquid through the peripheral jetw aperlures. Xs the throltlo opened vthe fr; 'veloeitji' of air past the periphirr)r ol' thedislr incrmnaal. which corresigioinlingly in.. creases the suelion upon the liquid luel. and, when as a result of the opening' of the 4throttle the engine speed is increased. there wi he inert-used cenrifugal n etiou on ,the liquid fuel in the hollow dish' nieulher which willanguieui 'he diseharge. rl"hus` the liqui l'uel and air will he*proporliolud to each other al. varying speeds ol' the engine. and v; wilhonl regard lo the speeilie gravity. oil" the#r liquiil.as ils discharge is e'l'l'eeted hy centrifugal action. lslherii an oil oi relatirely higher speeilic l.frraritv sueh as herosene, is used. the gri-eater speeilic .(rlaril'y will iucrease the eenlrilugal arl'ion. hut this is compensated 'for hr the greater viscosity of the oil and slower `response to the air suetion. Onthe other hand, Where a fuel of low specific gravity, saches gasolene. isrued;A therewill be a. quicker response-'to the im- 11m tion of air but less centrifugal force, which again will etleet a compensation. lt will. also he understood that the Con'n'nii'igling oil the liquid fue] with the air not dependent upon the vola'tilization of the liquid but is induced by the mechanical spraying-so that dill'ereneee` in the volatility oll the fuel will not affect the eonnningling result.

The presenee of the diaphragm or partig tion ll above the hollow disk (i jliorms a partial seal. so that a part-iai vacuum pro duced immediately helow the d isehzirg'ge port L. This air seal is not, however, (ani'nilete,v and a certain amount ot air pasfsinar between the diai'ihragni and disk from the periphery ot' the latter will roinniingle with the liquid in its discharge from the ,iet aperturesr therebyr facilitating the formation ot the explosive mixture.

lVhat. I claim as my invention isz-- l. In ay Carlun'eter, the fombinaiitm with a easing forming' an air sur-,tion ronduit. of a partition or diaphragm extending' arroseA said easing with apertures therethrough around the peripheryy only, a, meehanirallivdriren hollow disk nieniher ot' less diameterthan said apertiu'ed peripher)7 adjacent to said partition provided withperipheral vjet apertures directed into' a surroumling annular air space, and .inea'us for introducing liquid fuel throughf'said partition member.centrally within said hollow' disk. 2. ln a earbureter, the eonihination with a easing forming a suction conduit, ot a partition -extmidingr across said easing` and provided with a, liquid Jfuel inlet passage therein haring portions slightly. ahove the normal level of liquid fuel and a central dis charge port, a hollow dish' nwmher arranged adjacent to and approximately closed h ry said partition, the hollow space therein com-- nnnriatiugr with said' central diseharge port. ancl"t`he peripher).y -ot' the disk being :provided With discharge jet apertures directed into an annular air space between the. disk and; the walls ot the` easing, a shalt. on whieh said disk is mounted, and journal hearings for said shaft within said easing.

3. .lnfa carlhireter, the combination with .a casing forming an air suetion ronduit, ol a partit-ion or diaphragm extending' arross said casing withsegmental apertures therethrough around'the peripheryv` said partition or diaphragm beingr imporl'orate inter- Inediatesaid apertures7 a. hollow disk inember of less diameter than that of the pe ripheral segn'lental apertures adjaeent'to and slightly sj'iaeed from said partition provided with peripheral api-irtures directed int-o a surrounding annular space, and means `for drawing liquid. fuel through said partition niei'nher and air through the space between said partition member and disk member centrally into said disk member.

il.. ln a earl'nn'eter, the*combination with va easing forming an air sanction ronduit, of

a partition extending,` across said 'easing with narrow apertures tl'ierethrough. around the peripheryy only, a mechanically driven hollow inemlier ot less diameter than that of the peripheral apertnre, adjaoent to and slightly spaced 'trom said partition and provided with peripheral jet apertures, andl a` liquid fuel inlet in Said partition, opening into said hollow member substantially rentra lly thereof.

ln a earhureter, the combination with a raising havingan enlargtal annuler elia1nber and an air inlet therebeneath, a solid partit-ion near an end of said ehamher and exteiuling tllei'eaeross, provided with apertures adjacent to the walls ot said rhalmher,l a. positively driven hollow member lidiatient to said partition and spared. therefrom of less diameter than said rhamher and provided with peripheral jet apertures directed into the annular space between said hollow member and the walls of said enlarged Aannular chamber, and ia liquid t'uel" inlet lo cated within said p'arlitionand directed substantiallyr centrally 'into said hollow eliamher. l

t3. ln a carburetor, the combination with a. easing;` 'Forming an air snetion conduit, ot a partition or diaphragm extending` arross said easing with apertures theretlnough. around' the periphery, a rotatable hollow disk member adjacent to said partition and having one side apl)roxirnatel)y closed there-- liimsaid disk member being,provided with peripheral jet apertures lireeted into a surrounding air space, and n laus 'For int rodnoing liquid fuel centrally within said hollow. disk.

-'ln testimony \\fherei'if l allix my signature inV presence of two witnesses.

Al'ilillC-l) 'lllUlVllSUNl Witnesses Il.' E. BOWMAN, A. D. PULvnn. 

